Automatic auxiliary air valve for internal-combustion engines



June"15,1926. 1,588,924

J. 8. WEST AUTOMATIC AUXILIARY AIR VALVE FOR imam; comausnou mamas FiledJuly 26, 1924 INVE'N'TOR.

ATTORNEYS;

Patented June 15, 1926.

warren s'r'rss JOHN 13. WEST, OF SYRACUSE, NEW YORK.

AUTOMATIC AUXILIARY AIR VALVE FOR INTERNAL-COMBUSTION ENGINES.

Application filed July 26, 1924. Serial No. 728,482.

In describin this invention reference is had to the accompanying drawings in which like characters designate corresponding parts in all the views.

Figure 1 is a sectional view of this air valve, the same being applied to the intake manifold of a Ford car.

Figure 2 is an end View of the device shown in Fig. 1.

Figure 3 is a detail view of the valve itself, and the means for operating it.

Figure 4t is an elevation of another form of this air valve, the same being unprovided with means for taking in warm air, the contiguous portion of an intake pipe system or manifold being shown in section.

Figure 5 is an elevation, looking to the left, of parts seen in Fig. 1.

This automatic auxiliary air valve, co1nprises a casing in the intake pipe system of an internal combustion engine, a valve closure, and operating means arranged to be operated by the draft through the intake pipe, the operating means being connected to the valve closure to open it when said means is actuated by the draft. Preferably the closure or valve is arranged to be closed by the suction in the intake of the engine and to be opened against the suction by the draft.

I have here shown this auxiliary air valve as attached to the intake manifold, although it may be attached at any point between the throttle valves and the cylinders of the engine.

1 designates the tubular body or casing, preferably separable from and attachable to the intake manifold as 2, of an internal combustion engine. 3 designates the valve or closure it being usually a lid hinged at a in any suitable manner to the outer end of the tubular body or casing 1. The lid owing to its arrangement is closed or tends to be held closed by the suction within the manifold 2.

The operating means for opening the closure 3 is arranged to be operated by the draft through the manifold 2, that is, by the current of air and vapor or mixture rushing through the manifold from the can buretor to the cylinders. This means cornprises a vane or blade 5'connected to the valve closure 3, it being here shown as mounted on a stem 6, which is connected to the closure 3, the stem being usuali f' rigidly connected to the closure 3, the whole structure including the vane stem and pivoted closure acting as a working lever. As here shown the stem is riveted as at to the closure. The'vane 5 is made of such size as to open the closure 3 against the suction when the vehicle is being driven by the engine at a predetermined speed, say 12 to 15 miles per hour, with the transmission gear in high.

Preferably in order to provide for the inlet of heated air through the auxiliary air valve, the body 1 is mounted in the shank 8 of a casing 9, which shank has a stem 10 threading into the wall of the manifold 2. The casing is in the general form of a conventional oil cup, and is closed at its outer end by a spring-pressed lid 11. The case is provided with a coupling 12 which is connected to a source of supply for warm air, as for instance, a stove surrounding a portion of the manifold 2. The casing is also provided with a coupling 13 having an opening 14 for the inlet of cold air, the opening being closed when desired by a shell 15 which turns on the coupling 13 to bring a hole therein into alinement with the hole 14, the cold air coupling here shown for convenience is. another conventional form of oiler. The tubular body 1 is pressed into the shank 8 of the casing 9.

As seen in Figs. 4 and 5, the casing 9 may be dispensed with. In this form the tubular body is designated 16, and is secured to or formed integral with a threaded nipple 17 having a wrench hold 18, the shank being for the purpose of threading into the wall 19 of the manifold. In Figs. 1 and 5, the lid or closure 20, vane 21, stem 22, is the same as the closure 3, vane 5, and stem 6 of the form shown in Fig. 1.

In operation at slow speed the draft through the intake manifold 2 is not sufficient to actuate the vane 5, and hence, open the closure or valve 3, as at slow speed with the throttle nearly closed the suction is greater and the draft less, as the throttle is opened the draft becomes greater and when the throttle is open far enough and the speed of the engine sufficient to drive the car in high gear, at a predetermined speed, from 12 to 15 miles an hour, the draft overcomes the tendency of the suction to hold the valve 3 closed and opens said valve permitting the inlet of auxiliary air to the engine cylinders. lV hen the engine is running slowly with open throttle as when climbing a steep hill or with heavy load, the draft decreases and hence the valve closes.

As the eiiect of auxiliary air in the cylinders is well known it is thought that Further (lQSCllptlOIl unnecessary, it being SllillClQllC to mention that when the engine is running with a partly closed throttle the auxiliary air breaks the exce'": vacuum in the eylindei and hence, relieves the back pull on the pistons due to such excess vacuum, and hence, also eliminates the sucking past.- the pistons 01" oils, that is, eliminates oil pumping.

il -hat I claim is 1. An automatic auxiliary air valve for internal combustion engines comprising a valve passage, a lid at the outer end of the passage for closing the same and being pivoted at one side of the passage, an operating member extending at an angle to the lid and to the pivotal axis thereof through the passage into "the intake pipe of the engine into the path of the draft passing through the intake, the operating member being connected to the lid between the pivotal axis of the lid and "the tree edge thereof.

2. The auxiliary air valve of claim 1 in which the lid is pivoted at its lower edge on a horizontal axis and the operating member extends in a horizontal direction from the lid between the upper edge of .the lid and the pivotal axis thereof.

3. An automatic auxiliary air valve for internal combustion engines comprising a tubuiar body for connection in the intake system of the engine, alid pivoted to the outer end of the body, a vane arranged beyond the inner end oi the bot y, a stem connecting the vane and thelid and being rigidly connected [0 the lid whereby movement of the vane causes the lid to be moved outwardly on its pivot.

In testimony whereof, I have hereunto signed my name at Syracuse, in the county of Onondaga, and in the State of New York, this l'i'th day of July, 192%.

' JOHN B. WEST. 

